baber/WOPTO huggingface dataset:
Patent GB-432196-A (GB)
Title: Improvements in the manufacture and production of polymerisation products of high molecular weight from isobutylene
IPC: C08F110/00
Filed: 1934-01-13
Abstract: Polymerization products of much higher molecular weight and of greater viscosity are obtained when polymerizing isobutylene by means of boron fluoride according to the process of Specification 401,297 if specially pure isobutylene obtained by converting isobutyl or tertiary butyl alcohols and subsequent purification by distillation is employed.  The low temperatures defined in the first Specification are no longer necessary, as ordinary room temperature or temperatures even as high as 100 DEG  C. may be employed.  In an example, isobutylene obtained by leading isobutyl alcohol over aluminium oxide at 400 DEG  C. and subsequent distillation at 2 or 3 atmospheres in a column 5 metres in height, is cooled to -15 DEG  C. and boron fluoride led in.  An oil having a viscosity of 250 DEG  Engler at 100 DEG  C. is obtained.  If the polymerization is carried out at -80 DEG C., a product is obtained having a molecular weight of 40,000, whereas if undistilled isobutylene is treated under the same conditions a product of 10,000 to 15,000 molecular weight is obtained.  The Provisional Specification states that mixtures containing isobutylene may be employed and includes examples in which a cracking gas containing 25 per cent of isobuty lene is polymerized to give (1) a viscous oil having a viscosity of 4,5 DEG  Engler at 100 DEG  C., and (2) a solid product of molecular weight 12,000.
Patent GB-644312-A (GB)
Title: Improvements in and relating to a heat-exchange device for treating oil, cream, fat emulsions, and other viscous substances
IPC: A23G1/18
Filed: 1947-01-15
Abstract: <PICT:0644312/III/1> <PICT:0644312/III/2> <PICT:0644312/III/3> The invention relates to a heat exchanger for treating viscous substances, e.g. for crystallizing fat emulsions, of the type provided with a number of rotatable circular discs 12, Fig. 5, carrying guide members for moving the substances along heat transmitting surfaces formed as walls 6, Fig. 3, of containers 1, 2, 2a, 2b, 3, arranged one above the other enclosing the discs, see Fig. 1.  The guide members, according to the invention, are formed as knife members 18 which scrape the walls 6 whilst the interior of each container has partitions 17 forming channels to direct the heating or cooling medium over the interior surface of the walls in spiral fashion from an inlet to an outlet arranged coaxially to form a pipe connection 14 or arranged in separate pipe connections 14, 15 as in the top container 3.  The interior of each container is divided into upper and lower compartments by a horizontal partition 16 having an aperture (not shown) near the centre connecting the upper and lower channels.  The viscous liquid to be treated enters through a pipe 21 and is directed by the knife members 18 (not shown in Fig. 1) through annular spaces 11 between the containers to an outlet 23 at the top. The heating or cooling fluid enters an inlet in the pipe connection 14 on the lowermost container 1 and proceeds via the channels through each container compartment to the uppermost compartment of container 3 which it leaves by an outlet into pipe connections 15 on each container which excepting in the container 3, do not communicate with the container interiors.  By modification of the inlets and outlets of the pipe connections and by means of stoppers the device may be arranged for the parallel flow of a heating fluid in an upper set and of a cooling fluid in a lower set of containers. The containers are held together by bolts 24 or hydraulic pressure.
Patent GB-789121-A (GB)
Title: Improvements in the manufacture of shoes and like articles of footwear
Inventor: TUSA JOHN
IPC: B29D35/08
Filed: 1954-01-18
Abstract: 789,121. Boots &c. BRITISH BATA SHOE CO., Ltd. April 28, 1954 [Jan. 18, 1954], No. 1379/54. Class 17(2) In making force lasted rubber soled footwear the intersole 11, 31, is cut as a composite blank from a sheet formed by coating a textile sheet 11 with uncured sponge rubber mixture which is then vulcanized to unite permanently the sheet and form an intersole 31. After sewing a textile upper 10 to the textile layer 11 and force lasting to form an upstanding margin 13, .an uncured outsole 32 and a foxing 33 are applied and vulcanized to the lasted insole-upper sack. Specification 615,046 is referred to.
Patent GB-1329673-A (GB)
Title: Method and apparatus for stretching a flexible sheet of material fastened to a pair of rigid structures
IPC: E04H15/64
Filed: 1972-01-12
Abstract: 1329673 Tent-like building structures F VENTIMIGLIA 12 Jan 1972 [19 Jan 1971] 1416/72 Heading EIA In a building such as a greenhouse having a flexible covering 3 secured to a framework 1, 2 provided with an intermediate re-inforcing structure 4, 5, 6, 7, the covering is held taut by an inflatable member 9 which is prevented from bulging outwardly of the building by a rigid strap 10 adjustably anchored to the structure as depicted in Fig. 2 (not shown). The covering may be made of plastics and may have a smooth or perforated surface or be in the form of a net, a shielding strip of plastics being disposed between the covering and the intermediate structure as shown.  (For Figures see next page)
Patent GB-904187-A (GB)
Title: Improvements relating to hasps
IPC: E05C19/08
Filed: 1958-01-16
Abstract: 904,187. Hasp fastenings; hinges. SQUIRE, G. P. J. Jan. 1, 1959 [Jan. 16, 1958], No. 1521/58. Classes 44 and 65 (2). Relates to hasp fastenings of the kind comprising an attachment element 10 hingedly connected with a hasp element 22 having an aperture 25 or formation enabling it to be passed over a staple 26 or into co-operative relation with a retaining element secured or adapted to be secured to one of the members to be fastened. According to the invention, the attachment element comprises an attachment plate adapted for fixing to the outer face of a door or other member, and having one or more parts situated adjacent to an end of the attachment plate and projecting rearwardly therefrom to lie in face to face relation with an edge face of the door or other member, so as to be concealed when the door is closed and is also adapted for fixing to the door or other member. As shown in Figs. 1 and 2, a tongue 13 extends from the base of a slot 11 provided at one end of the element 10 and extends through a slot 23 of the element 22, a U-shaped portion 15, 16 of the tongue, spanning the length of the slot. The free end 17 of the tongue may be screwed to the edge face of the door or member to which the element 10 is attached. The position of the slot 23 is such that the element 22 overlaps portions 21 of the element 10 at either side of the slot 11. The portions 21 may interengage with the tongue in the region of the junction of the portions 15 and 17, to positively secure the tongue against prising up from the front of the element 10. In the arrangement according to Fig. 3, the element 10 is provided with a pair of spaced tongues 14 which are interlinked with a T-shaped end of the hasp element 22. In another arrangement, Fig. 5 (not shown), the tongue is disposed at the end of the element 10 remote from the staple, and the hasp element overlies the element 10 thus to conceal the fastening screws therefor. The element 10 includes a cranked portion at the staple end by which the element may be secured also to the edge face of a door or like.
Patent GB-674908-A (GB)
Title: Improvements in or relating to correcting circuits for television transmitter tubes
IPC: H04N5/202
Filed: 1950-01-20
Abstract: 674,908. Electric analogue calculating systems. WESTERN ELECTRIC CO., Inc. Jan. 20, 1950 [Jan. 21, 1949], No. 1562/50. Class 37. [Also in Groups XL (b) and XL (c)] A circuit for producing the nth root of an input signal is described with particular reference to a television transmitter (see Group XL (b)). A signal from a picture tube, after amplification, is fed to the negative feed-back amplifier V1, V2, Fig. 2. The output is applied to a constant current generating valve V3, the internal impedance being increased by feed-back resistor 65. The anode is connected to the cathode of valve V4 so that variations in the anode current cause the impedance of valve V4 to change and thus the amplification. By varying resistor 67 and by suitable choice of cathode resistor 72, the output from the anode of valve V3 may be made to obey the desired law. Valve V5 operates as a direct-coupled amplifier, gas tube V6 maintaining a fixed reference potential at low or zero frequency.
Patent GB-302821-A (GB)
Title: Improvements in or relating to apparatus for extracting pipes and like cylindrical articles from the moulds in which they are cast
IPC: B22D13/10
Filed: 1928-01-17
Abstract: 302,821. Centrifugal Castings, Ltd., Hurst, J. E., and Ball, E. B. Jan. 17, 1928. Castings, extracting.-A device for extracting a pipe or the like from a centrifugal or other mould has expansible grippers F<2> adapted to be moved relative to a framework A which runs on overhead rails C. The grippers are carried by levers F' pivoted to a rod B on which is screwed a hand-operated nut E<1> which moves a sleeve E to expand the grippers. A second nut B<1> is then operated to move the grippers relative to the framework A and thus extract the tube as shown. A pivoted support H is then raised, as shown, to engage the tube by a lever K and toggle K<1> and the whole is moved on the rails C to supports L, Fig. 4, which are raised by a toggle M operated by a lever N. The toggle M is connected to the support L through a pivoted detent O having limited movement so that the toggle lifts the detent to hold the pipe G until the extracting device has been removed. The lever N is then moved further, Fig. 6, so that a stop M<1> on the toggle withdraws the detent and the pipe G rolls on to a platform, conveyer, truck, &c. P.
Patent GB-694210-A (GB)
Title: Improvements in or relating to friction hoists
Inventor: SPRINGATE ALBERT EDWARD JOSHUA
IPC: B66D3/22
Filed: 1951-01-22
Abstract: 694,210. Pulley hoists. SPRINGATE, Ltd., A. E. Jan. 21, 1952. [Jan. 22, 1951] No. 1651/51. Classes 78 (iv) and 78 (v). Gearing for driving a winch 1 comprises a friction driving member 6a mounted on the shaft of a motor 8 carried by a platform 5a which can be raised to engage the member with friction wheels 3b, 4b, Fig. 1, on shafts 3, 4 carrying gears 3a, 4a in mesh with a gear 1b attached to the drum. A bracket 5 mounted on the platform carries a double-sided brake shoe 7 which contacts the wheels 8b, 4b as the element 6a is disengaged from them. The platform is raised by a hand operated lever 9 which is in the path of the load supporting block 10. If the load is raised too high, the block raises the lever to interrupt the drive and apply the brake. The end 12e of a lever 12 which is attached to the free end 11b of the load rope 11, bears on the brake shoe and ensures that the braking force is proportional to the load. The drum is supported by members 2a depending from U-shaped brackets 2b. These brackets carry rollers 14 which run on a beam 13 and are driven through worm gearing by shafts] 16a. The ends of these shafts are connected by universal joints to shafts 16f which are themselves connected bv similar joints to short shafts 16e. These shafts are mounted in a structure 17 which is pivoted in a U-shaped bracket 5g mounted on the platform 5a. Friction discs 15f, 16f on the shafts can be tilted by pulling cords 17c to bring one of them into engagement with a friction pulley 6b on the motor shaft.
Patent GB-1171881-A (GB)
Title: Electrical Interlock Circuit for Multiple Choice Vending Machine.
IPC: G07F5/26
Filed: 1968-01-11
Abstract: 1,171,881. Interlocks. WESTINGHOUSE ELECTRIC CORP. 11 Jan., 1968 [27 Jan., 1967], No. 1658/68. Heading G4V. A vending machine comprises a plurality of compartments each closed by a door 14a connected by a link 14c to a delivery tray 14d, each tray carrying a stud 14e co-operating with a common blocking member 20, and a coinoperated electrical control circuit for moving the blocking member clear of the studs 14e, each delivery tray being associated with a switch 31-34 in the control circuit whereby simultaneous movement of two of more delivery trays opens the control circuit to return the blocking member to its operative position. A switch 40 is closed by a coin to energize a relay 41 changing over contacts 41a, 41b and 41c to hold-on the relay and de-energize coin rejector 43 returning subsequent coins to the customer. Operation of one of the switches 31-34 on moving a delivery tray, energizes relay 23 to pivot the blocking member 20. Each delivery tray includes a full-stroke mechanism comprising a ratchet 24 and a common pawl 25. The latter operates a switch 26 in the supply line L2 to restore the control circuit to its initial state.
Patent GB-1514693-A (GB)
Title: Insulated port for internal combustion engines
IPC: F02B77/02
Filed: 1977-01-17
Abstract: 1514693 IC engine combustion chambers; rotary positive displacement machine CATERPILLAR TRACTOR CO 17 Jan 1977 [9 June 1976] 1666/77 Headings F1B and F1F In an I.C. engine (rotary or reciprocating) comprising a housing 10, piston 16 and a port 26, a tube 28 has one end secured to a second housing 40 around an outlet from a pre-chamber 42 defined thereby, and the other end free to move within and relative to the port 26 due to thermal expansion; the tube being surrounded by an airgap 58 or insulating material. A fuel injector 48 and a seal 60 may be provided.
Patent GB-210086-A (GB)
Title: Improvements in bracelets, necklaces and like articles of jewellery
IPC: A44C5/02
Filed: 1924-01-21
Abstract: 210,086. D÷ppenschmitt, P. [Firm of]. Jan. 22, 1923, [Convention date]. Beads, threading. - Bracelets, bangles, necklaces, and like bands are formed by threading a number of perforated beads or members 1 closely together upon a band 5, Fig. 5, of chain fabric composed of wire links or of plaited or woven wire provided with fastening means or stops at the ends. The band may be hollow, Fig. 2, and one or more convolutions of spring strip 3 may be threaded throughout the length to render the band expansible.
Patent GB-450078-A (GB)
Title: Improvements in and relating to electric lamps
IPC: H01K1/46
Filed: 1936-01-18
Abstract: 450,078. Two-part couplings. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Jan. 18, 1936, No. 1686. Convention date, Jan. 18, 1935. [Class 38 (i)] A tubular electric lamp is provided with a metal disc sealed at each end to form an end wall, with a laterally extending prong portion secured to or integral with each of the discs to form a terminal and mounting means. The metal discs are preferably of the type described in Specification 428,414, [Group XI], and consist preferably of a metal or alloy, such as a chrome-iron alloy, which has the same coefficient of expansion as glass. In one form, Fig. 1, the prongs 13, 14 are integral with the respective discs 11, 12, and may be provided with holes 27, 28 which engage spherical protuberances on the socket terminals. Fig. 3 shows part of two lamps 10 which are mounted end-to-end in a double socket 29. The prongs may be split longitudinally over part of their length, or provided with a protuberance which engages a corresponding depression in the terminal of a socket. A U-shaped loop portion may be formed in the prong to render it resilient or flexible. In another form the prongs 41, 42, Fig. 4, are twisted at right angles, so that the faces of the socket-engaging portions are in a plane parallel to the longitudinal axis of the lamp bulb, the slot 44 in each socket 43 being provided with a single resilient metal contact 45 which engages both prongs, and the width of the slot being wider than the two adjacent prongs 41, 42 to allow for small variations in the lengths of the individual lamps. The discs may have a covering or coating of insulating-material, such as an insulating-enamel, or a cap of insulating- material secured thereto.
Patent GB-489230-A (GB)
Title: Improvements in or relating to metal capsules for milk bottles and similar containers
IPC: B65D41/10
Filed: 1937-01-20
Abstract: 489,230. Closure caps. SHAW, G. A. Jan. 20,1937, No. 1690. [Class 125 (iii)] Before stamping or pressing capsules for milk bottles and like containers, the metal from which the capsules are stamped or pressed is covered on one or both sides with a cellulosic sheet material such as that sold under the Registered Trade Mark " Cellophane " or is coated with a similar layer of cellulosic composition applied in liquid form.
Patent GB-498773-A (GB)
Title: Improvements in mechanism for operating and controlling valves
IPC: F01L9/11
Filed: 1938-01-19
Abstract: 498,773. Hydraulic transmission of power. RALSTON, G. Jan. 19, 1938, No. 1757. [Class 69 (ii)] [Also in Groups XXVI and XXVIII] Comprises a hydraulic gear for operating one or more distributing valves, where the cycle of operation of the valves may be varied during operation as regards the points at which they are opened or closed. The valve 1 controls the cylinder port 3 and is acted upon by a spring 4 and a plunger 5 under hydraulic pressure. The liquid is stored in a reservoir 11 and passages 12, 15. The reservoir 11 has a suction valve 16, a non-return valve 17, a release valve 18, and a pump plunger 19. Release-valve and plunger operating cams 35, 36 are mounted upon coaxial shafts 23, 24 connected by a differential gear comprising wheels 21, 22 on shafts 23, 24 and rotatable bevel wheels 25, 26 mounted upon an adjustable spider 29. The shaft 24 is operated by the engine or machine, and the time of opening relative to the tune of closing the valve, is adjustable. The control of the spider may be extended to 360 . Other forms of differential gear may be used. Alternatively the shaft of the pump cam may be directly operated and the relief-valve cam driven therefrom through differential geariiig. In another form of gear, both the time of opening and closing the valve are controllable. Relief-valve cams and plunger-operating cams for two or more valves are mounted upon separate cam shafts each of which is connected by differential gearing and spur gears to a driving shaft. The spiders of the gears are connected by wheels of the same or different pitch, and are simultaneously operated.
Patent GB-862478-A (GB)
Title: Improvements in or relating to water tanks
IPC: E03D1/012
Filed: 1958-06-11
Abstract: 862,478. Tanks. BELL, J. June 3, 1959 [June 11, 1958], No. 18608/58. Class 69 (1). [Also in Group I] A water tank includes an inlet pipe 12 and a stop valve 13 actuated by a float 14 and overflow means in the form of a U-shaped pipe 15 consisting of two parts 15a, 15b joined by a connector 16. In use the overflow tube operates as a siphon when the water level in the tank rises above the level of the connector 16 due to a fault in the valve 13. The tank empties to the level of the bottom of the tube 15a at a greater rate than the rate of flow into the tank through the inlet pipe 12.
Patent GB-620534-A (GB)
Title: Improvements relating to wheel barrows
IPC: B62B1/20
Filed: 1947-01-21
Abstract: 620,534. Hand trucks. MUSGROVE & GREEN, Ltd., and GREEN, D. A. Jan. 21, 1947, No. 1856. [Class 108 (i)] A wheelbarrow has a detachable wheeled chassis a including handles a<SP>4</SP>, the chassis a comprising a fork a<SP>2</SP> for the wheel a<SP>1</SP>, a clamping section and an upwardly-directed section a<SP>3</SP> in angular relation to the clamping section. The container b may be removed from the chassis and a seed-drill, one or more hoes, or cultivator tines may be operatively clamped to the chassis a.
Patent GB-762976-A (GB)
Title: Erythromycin b and acid addition salts thereof
Filed: 1954-01-21
Abstract: Erythromycin B is produced by cultivating an erythromycin - B - producing strain of Streptomyces erythreus in a culture medium containing an assimilable source of carbohydrate, nitrogen and inorganic salts under submerged aerobic conditions until substantial antibiotic activity is produced by said organism in said culture medium and extracting the filtered medium with a waterimmiscible polar solvent, removing the solvent and separating the erythromycin B by countercurrent extraction from any erythromycin present.  Suitable micro-organisms are S. erythreus strains NRRL 2338 (preferred), NRRL 2359, NRRL 2360 and NRRL 2361.  The culture medium and conditions of culture are similar to those employed in Specification 708,159 for the preparation of erythromycin per se.  Specified water-immiscible polar solvents are alkyl esters of fatty acids, e.g. ethyl acetate and amyl acetate; chlorinated hydrocarbons, e.g. chloroform and ethylene dichloride; alcohols, e.g. butanol and pentanol; ketones, e.g. methyl amyl ketone, ethyl ether and dibutyl ether. Preferably the filtered broth is adjusted to at least pH 9.5 before extraction with the polar solvent.  Erythromycin B is separated from erythromycin by (a) adsorption and e.g. purified cellulose fibre followed by selective elution with e.g. aqueous ammonia saturated with methyl isobutyl ketone; or (b) extraction in a Craig countercurrent apparatus using as solvent a mixture of methyl isobutyl ketone, 0.1 M phosphate buffer at pH 6.5 and acetone. Erythromycin B is a nitrogenous base forming salts <FORM:0762976/IV(b)/1> <FORM:0762976/IV(b)/2> with acids; in 2 : 1 dimethylformamide-water solution pK1a  of 8.5; molecular weight of about 736; infra-red absorption spectrum of chloroform solution shows absorption maxima at 2.80; 3.34; 5.80; 5.90; 6.84; 7.24; 7.50; 7.79; 8.04; 8.54; 8.98; 9.14; 9.48; 9.86; 10.24; 10.56; 10.96; 11.22; 11.54 and 11.94 microns. Specified salts are the hydrochloride, sulphate, citrate, mandelate, succinate, oleate, palmitate, myristate, stearate, oxalate, thiocyanate and glucoheptanate.
Patent GB-699558-A (GB)
Title: Improvements in or relating to electric cables
Inventor: DIXON NORMAN
IPC: H01B7/08
Filed: 1952-01-23
Abstract: 699,558. Cables. GLOVER & CO., Ltd., W. T. Jan. 22, 1953 [Jan. 23, 1952], No. 1902/52. Class 36. A wiring cable comprising a flat group of two or three insulated conductors 1 enclosed in a common covering 6 consisting of a textile braid or a flexible rubber or plastic sheath, is provided with one or two flat strips 3 of rigid material which extend lengthwise of the cable and have a width exceeding the distance between the axes of the two outside cores of the group so that the cable is made resistant to bending in the plane in which the cores are disposed. The strips 3 may be of hard, non- brittle metal and have a thickness between 5 and 10 mils. or of a hard, non-brittle plastic and have a thickness between 5 and 20 mils. Where a braided covering is applied the assembly may be held together by a lapping of textile tape applied under the braid. The strips 3 may also serve as earthing conductors, either alone or in association with a further bare conductor, or as a marking strip.